Python Selenium “名称错误：未定义名称‘驱动程序’”

Question

I try to run a webdriver Selenium and select

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import Select
from selenium.webdriver.support.select import Select

usernameStr = 'value'
passwordStr = 'value'


browser = webdriver.Chrome()
browser.get(('website'))

# fill in username and hit the next button

username = browser.find_element_by_id('username')
username.send_keys(usernameStr)

nextButton = browser.find_element_by_xpath('value')
nextButton.click()

# wait for transition then continue to fill items

username= WebDriverWait(browser, 2).until(
     EC.presence_of_element_located((By.ID, value')))
username.send_keys(usernameStr)

password = browser.find_element_by_id('value')
password.send_keys(passwordStr)


signInButton = browser.find_element_by_id('submitButton')
signInButton.click()

nextButton = browser.find_element_by_xpath('/html/body/app-root/div[2]/app-nav/div/div[1]/div[2]/div[1]/button')
nextButton.click()


el = driver.find_element_by_id('reason')
for option in el.find_elements_by_value('16'):

Problem is that i try to select a value from a list. (Everyhting works until this point):

el = driver.find_element_by_xpath('reason')
for option in el.find_elements_by_value('16'):

Error:

"NameError: name 'driver' is not defined"

I'm pretty noob at this, so sorry if this is an easy solution.

Answer 1

This error message...

"NameError: name 'driver' is not defined"

...implies that in your program you are referring to driver which is not defined within your program.

---

Details

You have initiated the WebDriver instance and referenced to it as browser almost throughout your program.

But in the line:

el = driver.find_element_by_xpath('reason')

you are trying to refer to a the instance driver which is not defined within your program. Hence the error.

---

Solution

Change driver to browser . So effectively your line of code will be:

el = browser.find_element_by_xpath('reason')